I don't understand your question.
You will take the 8:15 CX730. You can check-in online and you will get your BP the day before. You could possible print it anywhere in the city if that is important to you. What is the issue?

Are you worried that you could not do OLCI? I assume that you travel without checked bag and worry that you might arrive late at the airport.
If you can get the day before at KUL before the CX check-in counter closes for CX last flight 724 (probably closes around 5), then they might be able print your BP. Unclear whether MH will do it, just as a favor. But why go through the hassle???? Unless you expect a problem with your booking.